Map of Dearborn County, Indiana

Dearborn County overview:
Name:	Dearborn County
FIPS code:	18-029
State:	Indiana
Founded:	1803
Named for:	Dr. Henry Dearborn
Seat:	Lawrenceburg
Largest city:	Lawrenceburg
Total Area:	307.42 sq mi (796.2 km²)
Land Area:	305.03 sq mi (790.0 km²)
Total Population:	50,679
Population Density:	164/sq mi (63/km²)

Dearborn County location map. Where is Dearborn County?

Dearborn County location on the U.S. Map. Where is Dearborn County. — Location of Dearborn County in the the United States.

Dearborn County location on the Indiana map. Where is Dearborn County. — Location of Dearborn County in Indiana.

History

In 1803, following Ohio’s admission to the Union, a wedge, or pie shaped, remnant of the former Northwest Territory along Ohio’s southwestern border was ceded to Indiana Territory and organized as Dearborn County. It was named after Henry Dearborn who was U.S. Secretary of War at that time. Lawrenceburg was then designated as the county seat.

All or part of seven other present day counties were carved from the original county with the present boundaries being established in 1845. The region, nicknamed the “Gore”, slices through the present-day counties of Dearborn, Franklin, Ohio, Randolph, Switzerland, Union, Wayne and Fayette. Subdivision of Dearborn County began in 1811 with the formation of Franklin and Wayne Counties, followed by Switzerland in 1814.

Early growth in the region was centered on Lawrenceburg which became an important railroad junction connecting two of the regions major rail lines. A contention existed between the towns of Lawrenceburg and the mostly German-speaking immigrants that dominated Rising Sun over the favored status of Lawrenceburg as the county seat. The rivalry between the two towns was resolved in 1844 when the Indiana State legislature separated the portion of Dearborn County south of Laughery Creek and created the last and smallest Indiana county, county of Ohio on March 1, 1844, with Rising Sun designated as its county seat.

Dearborn County Road Map

Dearborn CountyStreet Map. — Street map of Dearborn County, Indiana. Source: OpenStreetMap (OSM)

Geography

According to the 2010 census, the county has a total area of 307.42 square miles (796.2 km), of which 305.03 square miles (790.0 km) (or 99.22%) is land and 2.38 square miles (6.2 km) (or 0.77%) is water. Part of the southeastern county line is formed by the Ohio River.

Dearborn County contains the Perfect North Slopes ski resort.

Cities

Towns

Census-designated places

Other unincorporated communities

Bonnell
Braysville
Chesterville
Cochran
Cold Springs
Dover
Farmers Retreat
Guilford
Hardinsburg
Hubbells Corner
Kyle
Lawrenceburg Junction
Lawrenceville
Logan
Manchester
Mount Sinai
New Alsace
Sparta
Weisburg
Wilmington
Wrights Corner
Yorkville

Townships

Caesar Creek
Center
Clay
Harrison
Hogan
Jackson
Kelso
Lawrenceburg
Logan
Manchester
Miller
Sparta
Washington
York

Adjacent counties

Franklin County (north)
Butler County, Ohio (northeast)
Hamilton County, Ohio (east)
Boone County, Kentucky (southeast)
Ohio County (south)
Ripley County (west)

Climate

In recent years, average temperatures in Lawrenceburg have ranged from a low of 21 °F (−6 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1994 and a record high of 107 °F (42 °C) was recorded in July 1988. Average monthly precipitation ranged from 2.94 inches (75 mm) in September to 5.53 inches (140 mm) in May.